return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2OCH3OCH3 (water dimethylether dimer)

using model chemistry: HF_cp/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF_cp/aug-cc-pVTZ
 hartrees
Energy at 0K-230.196271
Energy at 298.15K-230.187015
Nuclear repulsion energy 
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 4198 3822 140.31      
2 A 4055 3692 257.04      
3 A 3256 2964 29.63      
4 A 3254 2962 36.99      
5 A 3181 2896 125.60      
6 A 3180 2895 0.07      
7 A 3141 2860 70.96      
8 A 3128 2848 50.94      
9 A 1766 1607 72.61      
10 A 1635 1489 1.41      
11 A 1623 1478 2.81      
12 A 1621 1475 12.30      
13 A 1619 1474 10.59      
14 A 1609 1465 0.03      
15 A 1588 1445 4.83      
16 A 1394 1269 14.02      
17 A 1326 1207 147.95      
18 A 1304 1187 11.10      
19 A 1267 1154 0.00      
20 A 1216 1107 58.95      
21 A 1024 933 55.96      
22 A 557 507 84.86      
23 A 442 403 5.71      
24 A 292 266 79.98      
25 A 251 228 16.76      
26 A 196 179 0.01      
27 A 121 110 1.18      
28 A 109 99 114.72      
29 A 40 36 5.97      
30 A 30 27 7.15      

Unscaled Zero Point Vibrational Energy (zpe) 24210.7 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 22041.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/aug-cc-pVTZ
ABC
0.32747 0.10026 0.07993

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.625 -0.017 0.034
O2 2.566 -0.009 0.127
O3 -0.416 -0.004 -0.160
C4 -1.128 1.178 0.037
C5 -1.164 -1.164 0.038
H6 2.917 -0.022 -0.745
H7 -1.512 1.240 1.052
H8 -0.453 2.003 -0.134
H9 -1.961 1.252 -0.657
H10 -0.514 -2.010 -0.132
H11 -1.548 -1.214 1.053
H12 -1.999 -1.214 -0.655

Atom - Atom Distances (Å)
  H1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11 H12
H10.94582.04963.00103.01501.50933.52912.90293.86612.92823.54133.8778
O20.94582.99543.88103.90530.94024.36383.63754.76433.68224.38614.7855
O32.04962.99541.39421.39413.38432.05382.00812.05292.00812.05382.0529
C43.00103.88101.39422.34214.29171.08661.07981.08673.25062.63262.6375
C53.01503.90531.39412.34214.30972.63233.25052.63781.07981.08661.0867
H61.50930.94023.38434.29174.30974.94373.97975.04324.01304.95975.0596
H73.52914.36382.05381.08662.63234.94371.76281.76663.59992.45463.0285
H82.90293.63752.00811.07983.25053.97971.76281.76404.01353.59993.6069
H93.86614.76432.05291.08672.63785.04321.76661.76403.60693.02952.4663
H102.92823.68222.00813.25061.07984.01303.59994.01353.60691.76281.7638
H113.54134.38612.05382.63261.08664.95972.45463.59993.02951.76281.7666
H123.87784.78552.05292.63751.08675.05963.02853.60692.46631.76381.7666

picture of water dimethylether dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.368      
2 O -0.485      
3 O -0.481      
4 C -0.825      
5 C -0.826      
6 H 0.173      
7 H 0.335      
8 H 0.374      
9 H 0.329      
10 H 0.372      
11 H 0.336      
12 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.928 -0.011 -1.243 3.181
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 145.100
(<r2>)1/2 12.046